Bag



H. ,1. LE VESCONTE 1,860,190

BAG

May 24, 1932.

Filed June 30, 1928 Patented May 24, 1932 UNITED STATES PATENT OFFICE HAROLD 3'. LE VESGON'IE, OF CHICAGO, ILLINOIS, ASSIGNOR '10 UNION SPECIAL MA CHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS I BAG Application filed June 30, 1928. Serial No. 289,501.

The invention relates .to new and useful lmprovements 1n bags, and more particular- 1y tothe closures for the bag.

. paper bags.

An object of the invention is to provide a bag which is closed by stitching with an adhesive applied along the line of stitching soas to prevent the escape of the contents of the bag through the perforation formed bythe needle. 4

In the drawings which show by way of illustration one embodiment of the invention:

Figure 1 is a side elevation of a portion of the bag showing the needle side of thestitches and showing the adhesive applied thereto.

2 is a sectional view on an enlarged scale taken on the line 22 of Fig. 1.

Fig. 3 is a view of the opposite side of the bag from that shown in. Fig; 1. I

The invention is directed to a bag closure which is particularly adapted for closing Prior to the invention it has been customary to enclose the side walls of the bag at the mouth thereof with a fabric strip folded so as to enclose the edge portions of the side walls of the bag. A line of stitching passes through the fabric and through the paper side walls ofthe bag. lVhena double chain thread stitching mechanism is used the enchained thread loops lying along one face of the fabric strip effectively close the needle punctures, and prevent the. escape of the material through the needle punctures.

' On the needle side of the stitches the needle the escape of material in the bag.

The present invention resides in the applying of an adhesive along the stitching line as the stitches are formed. This adhesive not only fills the needle puncture on the'needle side of the closure, but the adhesive will be absorbed b the stitching threads and the wall of the inding strip, and also by the bag, and thus very eifectivelyseal the bag preventing the escape of the finest material enclosed within the bag.

Referring more in detail to the drawings,

ings. This needle thread is passed in loop. form through the fabric, strip in the side walls of the bag and emerges from the other side of the fabric strips The needle thread loops are indicated at 3*. These needle thread loops are interlocked by a looper thread 3", -which vof course is formedinto loops. The loops 3? and 3 interlocking with each other fairly well cover the punctures in theface of the strip lying against the wall 1 of the bag. The needle enters the fabric strip 2 from the side of the bag opposite these en- 1 chained thread loops. The needle punctures are indicated at 3' in the drawings. The

needle thread passes from one puncture to the next puncture, and when the threads are drawn tight there is a slight tendency of the threads to open this needle puncture '3".

During the formation of the stitches an adhesive is applied to the closingseam at. the needle side of the formation of the seam. This adhesive is indicated at 4 in the drawings, and is supplied in such a quantity as to form a strip extending along the line of stitches which may completely cover the needle thread. The adhesive will be absorbed by the fabric strip and the stitching thread, and also the walls of the bag as indicated by the shaded portion in Fig. 2 of the drawings. This adhesive completely closes the needle punctures on the needleside. The adhesive, together with the enchained thread loops, form an effective seal for the bag preventing the escape of the finest material when placed in the bag.

While the invention is particularly applied to "abag'wherein'the sides are formed of paper, it will be equally usefulwith other types of material, and particularly all such fibrous material aswill retain an opening formed by the perforating needle. While it is preferred to use a fabnc strip for enclosing the ed in the anc e portions of the bag so as to aid will be understood that other material may be used for this purpose, and from certain aspects of'the invention the bindin strip may be omitted. The adhesive is re erably applied during the forming of t e line of stitches, but may be otherwise applied, and

' a may be applied to the thread along both sides of the bag mouth if desireda It has been found in practice that this adhesive not only closes the needle punctures, but also greatly reinforces the seam by cementing the needle thread to the material of the bag. 7

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A baghaving side walls, a closing strip folded about the mouth of the bag and engaging the outer faces of the side walls, a line of stitches including a needle thread formed into a series of loops and passing through the strip and the side walls of the bag, and; a looperthread formed into loops interlocked with the needle thread loops and covering the needle punctures in the strip against which the said looper thread loops are laid, and a strip of adhesive applied to the line of stitches on the side of the bag opposite the lojoper thread loops, said stripof adhesive filling and closing the needle punctures in the closing strip against which the adhesive strip is applied. v

2. A bag having side walls, a line of stitches passing through and joining said side walls, a strip of adhesive applied to the line of stitches on the side of the bag entered by the needle, said strip of adhesive filling and closmg the needle punctures in the, closin strip against which the adhesive strip is app ed.

HAROLD J. LE VESCONTE.

oring of, the closing stitches, it'

In testimonywhereof, I aflix my signature. 

